Circuit Protection – Mouser Hong Kong

.hide-partial { max-height: none; } .show-more { display: none; }

Ethernet ESD, Lightning, & Power Fault Protection

Littelfuse Ethernet/PoE ESD, EFT, Lightning, and Power Fault Protection ensures that the power fault overcurrent can be protected with Telelink fuses. The Ethernet Power Fault Protection includes the SMCJ and SP40 TVS Diode, SP3, SRV05xx, LC03xx, and SP40xx Diode Array, and the 0461xxx Fuse series. Littelfuse Ethernet/PoE ESD, EFT, Lightning, and Power Fault Protection products meet various applicable standards.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 308

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL

SP4024-01FTG
Littelfuse
1: HK$6.66
393,928In Stock

Mfr. Part No.
SP4024-01FTG

Mouser Part No
576-SP4024-01FTG

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 7A UNIDIRECTIONAL

Learn More

Datasheet

393,928In Stock

Cut Tape

HK$6.66

HK$3.20

HK$2.64

HK$2.01

Reel

HK$1.38

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1.5kW 150V Hi Rel 5% Bi-Directional

SMCJ150CA-HRAT7
Littelfuse
1: HK$179.85
319In Stock

Mfr. Part No.
SMCJ150CA-HRAT7

Mouser Part No
576-SMCJ150CA-HRAT7

Littelfuse

ESD Protection Diodes / TVS Diodes 1.5kW 150V Hi Rel 5% Bi-Directional

Learn More

Datasheet

319In Stock

Cut Tape

HK$179.85

HK$155.19

HK$133.00

Reel

HK$132.92

MouseReel Available

Min.: 1
Mult.: 1

: 500

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term

SG420
Littelfuse
1: HK$7.48
2,525In Stock

Mfr. Part No.
SG420

Mouser Part No
576-SG420

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 315-525V 2A GDT T/R 2 Term

Learn More

Datasheet

2,525In Stock

Cut Tape

HK$7.48

HK$6.22

HK$5.56

HK$5.33

HK$5.19

Reel

HK$5.14

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL

CG5600L
Littelfuse
1: HK$20.55
1,221In Stock

Mfr. Part No.
CG5600L

Mouser Part No
576-CG5600L

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP S.A. STANDARD 600V NOMINAL

Datasheet

1,221In Stock

Cut Tape

HK$20.55

HK$15.78

HK$13.07

HK$12.00

Reel

HK$10.36

HK$9.54

Min.: 1
Mult.: 1

: 1,000

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

SP3003-04ATG
Littelfuse
1: HK$18.50
4,847In Stock

Mfr. Part No.
SP3003-04ATG

Mouser Part No
576-SP3003-04ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

Learn More

Datasheet

4,847In Stock

Cut Tape

HK$18.50

HK$7.74

HK$6.62

HK$5.56

View

Reel

HK$4.78

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V SOD8820

SP3118-01ETG
Littelfuse
1: HK$4.52
65,241In Stock

Mfr. Part No.
SP3118-01ETG

Mouser Part No
576-SP3118-01ETG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 18V SOD8820

Learn More

Datasheet

65,241In Stock

Cut Tape

HK$4.52

HK$2.33

HK$1.90

HK$1.48

Reel

HK$0.822

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM

CG590L
Littelfuse
1: HK$23.84
3,361In Stock

Mfr. Part No.
CG590L

Mouser Part No
576-CG590L

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors STANDARD 90V NOM

Datasheet

3,361In Stock

Cut Tape

HK$23.84

HK$18.25

HK$15.12

HK$13.97

Reel

HK$11.51

HK$11.18

Min.: 1
Mult.: 1

: 1,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term

SL0902A230SM
Littelfuse
1: HK$17.02
3,521In Stock

Mfr. Part No.
SL0902A230SM

Mouser Part No
576-SL0902A230SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors GP 5X5 230V Minitube 2 Term

Learn More

Datasheet

3,521In Stock

Cut Tape

HK$17.02

HK$13.15

HK$11.01

HK$10.69

Reel

HK$9.45

View

MouseReel Available

Min.: 1
Mult.: 1

: 900

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF

CG690SM
Littelfuse
1: HK$20.06
888In Stock
2,000Expected 29/9/2026

Mfr. Part No.
CG690SM

Mouser Part No
576-CG690SM

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 90V SMD Ultra Low 0.3pF

Learn More

Datasheet

888In Stock

2,000Expected 29/9/2026

Cut Tape

HK$20.06

HK$15.37

HK$12.74

HK$11.75

View

Reel

HK$9.29

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term

SG350
Littelfuse
1: HK$11.75
1,995In Stock

Mfr. Part No.
SG350

Mouser Part No
576-SG350

Littelfuse

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 263-437V 2A GDT T/R 2 Term

Learn More

Datasheet

1,995In Stock

Cut Tape

HK$11.75

HK$8.96

HK$7.42

HK$6.86

Reel

HK$5.23

View

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV

SP3001-04JTG
Littelfuse
1: HK$10.44
83,980In Stock

Mfr. Part No.
SP3001-04JTG

Mouser Part No
576-SP3001-04JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF 8kV

Datasheet

83,980In Stock

Cut Tape

HK$10.44

HK$5.01

HK$4.31

HK$3.35

HK$3.18

Reel

HK$2.47

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 2 channels .65pF

SP3003-02XTG
Littelfuse
1: HK$12.91
74,509In Stock

Mfr. Part No.
SP3003-02XTG

Mouser Part No
576-SP3003-02XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 channels .65pF

Learn More

Datasheet

74,509In Stock

Cut Tape

HK$12.91

HK$6.86

HK$6.01

HK$4.72

Reel

HK$3.53

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

0461002.ER
Littelfuse
1: HK$14.47
24,808In Stock

Mfr. Part No.
0461002.ER

Mouser Part No
576-0461002.ER

Littelfuse

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

Learn More

Datasheet

24,808In Stock

Cut Tape

HK$14.47

HK$12.82

HK$11.92

HK$10.36

View

Reel

HK$8.15

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2

04611.25ER
Littelfuse
1: HK$15.95
66,360In Stock

Mfr. Part No.
04611.25ER

Mouser Part No
576-04611.25ER

Littelfuse

Surface Mount Fuses 600VAC 1.25A .104ohms 461 NANO2

Learn More

Datasheet

66,360In Stock

Cut Tape

HK$15.95

HK$14.22

HK$13.23

HK$11.59

View

Reel

HK$5.84

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact

LC03-3.3BTG
Littelfuse
1: HK$27.78
36,540In Stock
30,000Expected 8/3/2027

Mfr. Part No.
LC03-3.3BTG

Mouser Part No
576-LC03-3.3BTG

Littelfuse

ESD Protection Diodes / TVS Diodes 3.3V 1uA 30kV ESD Contact

Learn More

Datasheet

36,540In Stock

30,000Expected 8/3/2027

Cut Tape

HK$27.78

HK$14.96

HK$13.48

HK$10.85

HK$10.36

Reel

HK$10.03

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

ESD Protection Diodes / TVS Diodes 8 Ch 8kV 0.65pF SPA

SP3003-08ATG
Littelfuse
1: HK$15.29
30,417In Stock
24,000On Order

Mfr. Part No.
SP3003-08ATG

Mouser Part No
576-SP3003-08ATG

Littelfuse

ESD Protection Diodes / TVS Diodes 8 Ch 8kV 0.65pF SPA

Learn More

Datasheet

30,417In Stock

24,000On Order

Cut Tape

HK$15.29

HK$8.30

HK$6.86

HK$5.42

Reel

HK$4.18

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF

SP3010-04UTG
Littelfuse
1: HK$11.51
104,810In Stock
56,700Expected 6/10/2026

Mfr. Part No.
SP3010-04UTG

Mouser Part No
576-SP3010-04UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 6V .45pF

Learn More

Datasheet

104,810In Stock

56,700Expected 6/10/2026

Cut Tape

HK$11.51

HK$5.98

HK$4.78

HK$3.91

HK$3.68

Reel

HK$3.11

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF

SP3011-06UTG
Littelfuse
1: HK$9.78
55,660In Stock

Mfr. Part No.
SP3011-06UTG

Mouser Part No
576-SP3011-06UTG

Littelfuse

ESD Protection Diodes / TVS Diodes 6 Ch 8kV 6V 0.4 pF

Datasheet

55,660In Stock

Cut Tape

HK$9.78

HK$6.86

HK$5.75

HK$4.74

Reel

HK$3.40

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL

SP4022-01FTG-C
Littelfuse
1: HK$7.48
130,545In Stock

Mfr. Part No.
SP4022-01FTG-C

Mouser Part No
576-SP4022-01FTG-C

Littelfuse

ESD Protection Diodes / TVS Diodes 1.3pF 15A BIDIRECTIONAL

Learn More

Datasheet

130,545In Stock

Cut Tape

HK$7.48

HK$3.52

HK$2.98

HK$2.29

HK$2.17

Reel

HK$1.55

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA

SP3003-02JTG
Littelfuse
1: HK$11.43
26,215In Stock

Mfr. Part No.
SP3003-02JTG

Mouser Part No
576-SP3003-02JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 Ch 8kV 0.65pF SPA

Learn More

Datasheet

26,215In Stock

Cut Tape

HK$11.43

HK$6.14

HK$5.32

HK$4.23

HK$3.94

Reel

HK$3.21

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

SP3003-04JTG
Littelfuse
1: HK$10.44
23,453In Stock

Mfr. Part No.
SP3003-04JTG

Mouser Part No
576-SP3003-04JTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 Ch 8kV 0.65pF SPA

Learn More

Datasheet

23,453In Stock

Cut Tape

HK$10.44

HK$5.01

HK$4.31

HK$3.35

HK$3.04

Reel

HK$2.47

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 4 channels .65pF

SP3003-04XTG
Littelfuse
1: HK$10.69
8,227In Stock

Mfr. Part No.
SP3003-04XTG

Mouser Part No
576-SP3003-04XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 4 channels .65pF

Learn More

Datasheet

8,227In Stock

Cut Tape

HK$10.69

HK$5.10

HK$4.41

HK$3.44

HK$3.26

Reel

HK$2.53

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 2 CH 8KV 0.5pF

SP3006-02XTG
Littelfuse
1: HK$10.03
3,600In Stock

Mfr. Part No.
SP3006-02XTG

Mouser Part No
576-SP3006-02XTG

Littelfuse

ESD Protection Diodes / TVS Diodes 2 CH 8KV 0.5pF

Datasheet

3,600In Stock

Cut Tape

HK$10.03

HK$6.61

HK$5.32

HK$4.46

HK$3.91

Reel

HK$3.53

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip

SP3130-01WTG
Littelfuse
1: HK$4.44
31,438In Stock

Mfr. Part No.
SP3130-01WTG

Mouser Part No
576-SP3130-01WTG

Littelfuse

ESD Protection Diodes / TVS Diodes .3pF 10KV 28V 0201 Flipchip

Learn More

Datasheet

31,438In Stock

Cut Tape

HK$4.44

HK$2.33

HK$1.80

HK$1.46

View

Reel

HK$0.896

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2

0461.500ER
Littelfuse
1: HK$20.71
7,844In Stock

Mfr. Part No.
0461.500ER

Mouser Part No
576-0461.500ER

Littelfuse

Surface Mount Fuses 600VAC 0.5A .56ohms 461 NANO2

Learn More

Datasheet

7,844In Stock

Cut Tape

HK$20.71

HK$18.66

HK$17.26

HK$14.30

View

Reel

HK$9.37

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

Ethernet ESD, Lightning, & Power Fault Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support